Product Review
DENTSPLY Tulsa says that some of the
other advantages of the GT Series X files include
wider flutes to increase cutting efficiency and an
open blade design to reduce the chance of threading.
Break Resistance
When the 7 dentists who participated in this evaluation
were asked about the importance of break
resistance when purchasing rotary files, all of them
said it is very important. The evaluators were then
asked to rate the GT Series X rotary files on break
resistance. Four rated the files as excellent and 3
rated them as very good. One evaluator said, “The
resistance to fracture appears to be better than the
[files] I used previously.”
Flexibility
According to DENTSPLY Tulsa, the flexible
strength of the GT Series X rotary files is the result of
how they are built and the material with which they are
made: M-Wire nickel titanium. In a study presented at
the American Association for Dental Research 37th
Annual Meeting, researchers concluded that the “supe
rior mechanical properties of M-Wire
arise from the twinned microstructure,
which provides strengthening and
increased deformation without fracture.”2
When the evaluators were asked to
rate the GT Series X rotary files on
their flexibility, 6 rated them as excellent
and 1 rated them as very good.
One evaluator commented that the
files’ flexibility is excellent, “especially
in comparison to [other files].”
Safely Following the Canal
The increased flexibility of the GT
Series X rotary files allows them to follow
curved canal paths with faster cutting
while using fewer files, says the
manufacturer. When the evaluators were
asked about the importance of safely following
the root canal when purchasing
rotary files, 6 said this feature is very
important and 1 said it is important.
The evaluators were then asked to
rate the GT Series X files on their ability
to safely follow the root canal. Six
rated the files as excellent and 1 rated
them as very good. One of the evaluators
said of the GT Series X files, “Once
a guide path is established, the GTX
follows it very well.”
Cutting Efficiency
According to DENTSPLY Tulsa, the
GT Series X rotary files have been
designed with wider flutes, reducing the
number of continuous rotations around
the instrument from the tip to the end
of the cutting zone. These wider flutes
create a deeper chip space, thus increasing
cutting efficiency.
When the evaluators were asked to
rate the GT Series X rotary files on cutting
efficiency, 5 rated them as
excellent,
1 rated them as very good, and 1
rated them as good. One of the evaluators
simply described the cutting efficiency
of these files as “great.”
Overall Satisfaction
When the evaluators were asked to
compare the GT Series X rotary files
with similar files from other manufacturers,
5 said they were much or somewhat
better (2 evaluators said they
weren’t sure). Six evaluators said they
would definitely recommend the files to
colleagues and 1 said probably. All 7
evaluators said they would definitely
purchase the files in the future.
At the end of the evaluation, the
evaluators were asked to give their
overall satisfaction rating for the GT
Series X rotary files. Three evaluators
rated them as excellent and 4 rated
them as very good. One evaluator said,
“The GTX files are a huge improvement
over other [files] I have tried.”
Reference
- 1. Shen Y, Cheung GS, Bian Z, et al. Comparison
of defects in ProFile and ProTaper systems
after clinical use. J Endod. 2006;32:61-65.
-
2. Brantley WA, Clark WAT, Kovarik L, et al.
STEM observations of NiTi wires for rotary
endodontic instruments. Paper presented at
American Association for Dental Research
37th Annual Meeting; April 4, 2008; Dallas,
TX. Abstract 0595.
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